Machine models

Grove RT518 and RT620S specifications

Entries in this reference
Listing-entry count
2

Short answer

Grove RT518 and RT620S: rough terrain cranes.

Selected configuration figures
Configuration	Documented field and quantity
RT518	Net Power 115 hp Operating Weight 44,871 lb
RT620S	Net Power 142 hp Operating Weight 47,982 lb

RT518 and RT620S specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Grove	RT518 and RT620S	2	RT518 and RT620S

Boom
Specification	RT518	RT620S
Min Height @ Max Raise Angle	25 ft	27.89 ft
Max Height @ Max Raise Angle - No Jib	60 ft	69.89 ft
Max Elevating Angle	75 degrees	75 degrees
Number Of Sections	3	3
Swing Speed	3.3 rpm	3.1 rpm

Specification	RT518
Carrier/Base Length	20 ft
Upper Structure Tail Swing Radius	8.51 ft

Operational
Specification	RT518	RT620S
Operating Weight	44,871 lb	47,982 lb
Fuel Capacity	60 gal	50 gal
Hydraulic System Fluid Capacity	88 gal	82.6 gal
Operating Voltage	24 V	24 V
Alternator Supplied Amperage	90 amps	55 amps
Tire Size	16.00X25	16.00 x 24

Specification	RT518
Cooling System Fluid Capacity	9.4 gal

Transmission and speeds
Specification	RT518	RT620S
Transmission Type	remote mounted full powershift	Full powershift
Number Of Forward Gears	6	6
Number Of Reverse Gears	6	6
Max Speed - Forward	24.1 mph	28.6 mph

Variants — Source comparison annotation
Source guide	Differing-field count reported
RT518 and RT620S	32

Ratios
Figure	RT518	RT620S
Engine horsepower per 1,000 lb of weight	2.6	3.0
Fuel tank per engine horsepower	0.52 gal	0.35 gal

Grove RT518 and RT620S: rough terrain crane

RT518 and RT620S: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	rough terrain crane	Grove and the RT620 line that the RT518, RT620S belongs to (no title names the exact model). That is too few titles to say what owners mostly ask about, so the most recent are listed instead	2

Used market for the RT518 and RT620S — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Grove rough terrain crane	3

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
RT518	2	1978	$17,726	$20,000	$18,863	None shown
RT620S	1	1992	$19,203	$19,203	$19,203	None shown

RT518 and RT620S: recall reference — Dated CPSC search
Search date	Database	Names queried	Search result
2026-09-24	U.S. Consumer Product Safety Commission	Grove together with the rough terrain crane RT518, RT620S	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Grove RT518 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Grove RT620S — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Grove RT518 and RT620S — Heavy Equipment Forums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Grove RT518 — MachineryTrader. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Grove — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

RT518

Specification	Source figure
Boom
Min Height @ Max Raise Angle	25 ft
Max Height @ Max Raise Angle - No Jib	60 ft
Max Elevating Angle	75 degrees
Number Of Sections	3
Swing Speed	3.3 rpm
Min Operating Radius	3 ft
Max Operating Radius	16 ft
Dimensions and weight
Transport Length	33 ft
Transport Width	8 ft
Transport Height	10.82 ft
Ground Clearance	1.39 ft
Width W/ Outriggers Extended	18.38 ft
Upper Structure Tail Swing Radius	8.51 ft
Carrier/Base Length	20 ft
Engine
Engine Model	4-53N
Power Measured @	2,800 rpm
Max Torque	246 lb-ft
Torque Measured @	1,800 rpm
Displacement	212 cu in
Net Power	115 hp
Operational
Fuel Capacity	60 gal
Hydraulic System Fluid Capacity	88 gal
Operating Voltage	24 V
Tire Size	16.00X25
Alternator Supplied Amperage	90 amps
Operating Weight	44,871 lb
Cooling System Fluid Capacity	9.4 gal
Transmission and speeds
Transmission Type	remote mounted full powershift
Number Of Forward Gears	6
Number Of Reverse Gears	6
Max Speed - Forward	24.1 mph

RT620S

Specification	Source figure
Boom
Min Height @ Max Raise Angle	27.89 ft
Max Height @ Max Raise Angle - No Jib	69.89 ft
Max Elevating Angle	75 degrees
Number Of Sections	3
Swing Speed	3.1 rpm
Dimensions and weight
Transport Length	31.56 ft
Transport Width	7.97 ft
Transport Height	8.75 ft
Wheelbase	114.02 in
Ground Clearance	2.17 ft
Width W/ Outriggers Extended	17.63 ft
Engine
Number Of Cylinders	8
Engine Make	Cummins Diesel
Engine Model	V-504C
Power Measured @	2,600 rpm
Max Torque	303 lb-ft
Torque Measured @	1,800 rpm
Displacement	504 cu in
Aspiration	Naturally Aspirated
Net Power	142 hp
Bore	4.7 in
Stroke	3.8 in
Operational
Fuel Capacity	50 gal
Hydraulic System Fluid Capacity	82.6 gal
Operating Voltage	24 V
Tire Size	16.00 x 24
Alternator Supplied Amperage	55 amps
Operating Weight	47,982 lb
Transmission and speeds
Transmission Type	Full powershift
Number Of Forward Gears	6
Number Of Reverse Gears	6
Max Speed - Forward	28.6 mph

Compare Grove RT518, RT620S

Boom
Specification	RT518	RT620S
Min Height @ Max Raise Angle	25 ft	27.89 ft
Max Height @ Max Raise Angle - No Jib	60 ft	69.89 ft
Max Elevating Angle	75 degrees	75 degrees
Number Of Sections	3	3
Swing Speed	3.3 rpm	3.1 rpm

Operational
Specification	RT518	RT620S
Operating Weight	44,871 lb	47,982 lb
Fuel Capacity	60 gal	50 gal
Hydraulic System Fluid Capacity	88 gal	82.6 gal
Operating Voltage	24 V	24 V
Alternator Supplied Amperage	90 amps	55 amps
Tire Size	16.00X25	16.00 x 24

Transmission and speeds
Specification	RT518	RT620S
Transmission Type	remote mounted full powershift	Full powershift
Number Of Forward Gears	6	6
Number Of Reverse Gears	6	6
Max Speed - Forward	24.1 mph	28.6 mph